Home / 1,188,105.64-1,639,672.68-678,797.08

Finding the Fourth Proportional to 1,188,105.64, 1,639,672.68 and 678,797.08

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Solution

The fourth proportional to 1,188,105.64, 1,639,672.68 and 678,797.08 is: 936,789.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,105.64 : 1,639,672.68 = 678,797.08 : x
  2. Step 2: Convert to fraction form
    1,188,105.64/1,639,672.68 = 678,797.08/x
  3. Step 3: Cross multiply
    1,188,105.64x = 1,639,672.68 × 678,797.08
  4. Step 4: Simplify right side
    1,188,105.64x = 1,113,005,027,339.77
  5. Step 5: Solve for x
    x = 1,113,005,027,339.77/1,188,105.64
  6. Step 6: Final answer
    x = 936,789.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.